Wrench



April 8, 1930.

c. DE w. WAGNER! I WRENCH Filed May 51, 1 29 Patented Apr. 8, 1930CLINTON DE WIT'I. wAeNE-R, -oF oEnAR RAPIDS, Iowa WRENCH Applicationfiled May 31, 1929. Serial No. 367,550.

This invention relates to improvements in wrenches and has for itsobject to provide a self-setting wrench.

Another object of the invention is to provide a wrench having a levercontrol for a slide jaw.

With the above and such other objects in view as may hereinafter morefully appear, I have invented the device shown in the accompanyingdrawings in which:

Figure 1 is a side elevational view of my improved wrench partly insection.

Figure 2 is a top plan view thereof.

Figure 3 is an end elevation.

Like reference characters indicate like parts throughout the followingspecification, and in the several views in the drawings in which 1indicates a shank terminating at one end in a fixed aw 2, andterminating at the other end in a downwardly ofiset handle 3. The shank1, has a flat surface 4, upon which a slidable jaw 5 is movable by meansof the offset lever end 6, (pivoted at 7 to the jaw 5), of the leverhandle 8, said handle being formed of opposing members 9 and 10 whichstraddle the member 1 whereby the member 8 is slidable upon saidshank 1. The upper surface 11 of the body portion 12 of the member 1, isprovided with a rack 13 the teeth of which are adapted to engage withthe teeth 14 of the sinuously formed lock member 15 pivoted at 16between the links 17 and 18, said member 15 having a terminal 19, uponwhich a leaf spring 20, secured to the pin 21 seats, said spring heldnormally down against the end 16 by means of a pin.

Following is a description of how the wrench is operated: Refer toFigure 1. \Vhen the handle or lever 8 is in position, as shown, thepivoted bearings 7 25 and 16 are in line or nearly so. Now lower member8 until 7, 25 and 16 are at right angles to the shank 1. The members 7,25 and 16 must still be in a straight line or nearly so. Member 5 mustbe against member 4 always. In this position the spring holds the tail19 down so that only the rear tooth of member 15 engages the teeth 13.The teeth of the front end of member 15 stand away from the teeth 13.Now, if you put finger at 23, and press down and back to keep'm'embers 725 and 16 in line and press down far enough so that the rear teeth aredisengaged but the front teeth are not engaged or, mother words, so

that the-teeth 13 and 14 are parallel; member 5 5, stillbeing againstmember'4. It will be seen 'thatthe-re'is a little space between theteeth of 15, and the teeth 13. The-distance between'the'members 7 p and16 should'be such that when the members-"7,25- and'16'arein line and atright angle vto shank 1',"and memher-5 is against themember 4,-and teeth14 V are parallel with teeth 13, there will'be a little open spacebetween the teeth 13 and 14,

which allows the slidable jaw to be moved back and forth. When the lever8 is lowered it has a tendency to get members 7, 25 and16 out of line.after lever 8 is raised, as shown in Figure 1, put'finger on 23, andlower lever and at the same time press down at. 23, and back at the sametime. This will keep the three bearings in line and at the same timewill disengage the teeth when the three bearings are at right V V 5angles to the shank 1.

Upon removing the hand from said head 23 the said teeth 13 and 14interlock whereby the jaws are brought into' adjusted relative position,then, by pressing down upon the ".80

member 8 the head 24 of the'jaw 5 will be moved toward the jaw 2, andagainst the intervening nut or pipe. The greater the pres-- sure uponthe handle 8 the tighter the jaws will look upon the member beingengaged.

Having described my invention thatwhich I claim to be new and desire toprocure by Letters Patent is:

1. A wrench of the character described comprising a shank having a fixedjaw, a lever handle having an angular bifurcated portion straddling thefirst shank, a-slidable jaw pivoted between the bifurcated portion ofsaid lever and a fulcrum in line of said shank to which said lever ispivoted, links connected to said fulcrum,and carrying adjusting meansfor said slidable jaw.

2. A wrench of the character described comprising a shank having a fixedjaw, a lever handle having an angular bifurcated portion straddling thefirst shank, a slidable In order to expedite matters jaw pivoted betweenthe bifurcated portion of said lever and a fulcrum in line of said shankto which said lever is pivoted, links connected to said fulcrum, andcarrying adjusting means for said slidable jaw, said means comprising atoothed dog, said shank having teeth upon one edge engageable by theteeth of said dog.

3. The combination as set forth in claim 2, said dog being pivoted tosaid links.

4. The combination as s'et'fort-h in claim 2, said clog being pivoted tosaid links, said fulcrum and dog pivots being in substantial alinement.

5. The combination as set forth in claim 2,

said dog being pivoted to said links, said fulcrum and dog pivots beingin substantial alinement, said dog having a spring pressed lever. c

6. The combination as set forth in claim 2, said dog being pivoted tosaid links, said fulcrum and dog pivots being in substantial alinement,said pivots and fulcrum adapted to be brought to'a right angularalinement relative to said shank.

In testimony whereof I affix my signature.

CLINTON DE l/VITT WAGNER.

